Measuring instrument.



E. O. PARR.

MEASURING INSTRUMENT.

APPLICATION FILED 0CT.29,1918.

1,1 19,450, Patented Dec. 1,1914.

I A \o U U E'- \J T l I E El-wuvzw'toz 6w E0. PARFi 4 r VVUK 8?: W Wanemic! E Tils'rn'rns ELMER 0. PiABIR, F GLASFORD, ILLINOIS.

MEASURING INSTRUMENT.

Application filed October 29,

, panying drawings.

This invention eomprehends certain new and useful improvements inmeasuring instruments and has for its primary object to provide a deviceof this character which may be readily adjusted and which may be placedin compact form when not in use.

Another object is to provide a device of this character which may becomposed of a plurality of telescopic sections and which will beextremely simple and cheap to manufacture.

Another object is to provide an adjustable measuring instrument whichmay be employed as a try-square and which will be constructed in suchmanner that one arm thereof may be adjusted longitudinally and at anydesired angle to the remaining arm.

A further object is toconstruct the instrument in such manner that thesections of the adjustable arm may be readily moved within one anotherfor a limited distance in either direction and when in their innermostposition may be folded against and parallel to the other arm of thedevice, the outer longitudinal edges of the sections of the adjustablearm being in alinement.

A still further object is to generally improve and simplifyfltheconstruction and operation of devices of this character and increase theefficiency thereof without increasing the cost of the same.

With the above and other objects in view, my invention consists incertain novel constructions, combinations, and arrangements of parts tobe hereinafter more fully described, claimed, and illustrated in theaccompanying drawings, in which,

Figure 1 is a plan view of the tool extended; Fig. 2 is a similar viewwith the tool in closed position; Fig. 3 is a fragmentary bottom planview of the adjustable arm; Fig. 1 is a fragmentary side elevationalview of the stationary arm; Fig. 5 is an enlarged detail perspectiveView of one end of the inner section of the adjustable arm; and Fig. 6is a sectional view on the line 6-6 of F i". 2.

Specification of Letters Patent.

Patented Dec. 1,1914.

1913. Serial No. 798,100.

Referring more specifically to the drawings in which similar referencecharacters designate corresponding and like parts throughout the severalviews, 1 designates the stationary arm or handle which is preferably ofrectangular form in cross section and which has one end beveled, asshown at 2, with the inner side of the section cut away at this end, asshown at 3.

The adjustable arm of the instrument is composed of a plurality oftelescoping sections numbered 4, 5, and (3, said sections beingsubstantially .U-shape in cross section with the free marginal edges ofthe lower walls in alinement, the free marginal portions of the upperwalls of the sections being inclinedforwardly and downwardly andterminating at a predetermined distance above and inwardly of the freelongitudinal edges of the bottom walls of the sections. The inclinedfront portion of eachsection is provided with suitable graduation marks7 upon its upper face and along its forward edgeto indicate inches andfractions of inches, whereby the length of the adjustable arm may bereadily adjusted and the forward marked edge thereof employed as a ruleof any desired length.

The first or inner section 4 ofthe adjustable arm of the tool isprovided with a pair of rearwardly directed ears 8 formed by cutting therear vertical portion of said section near its inner end and bending thematerial outwardly, as will be clearly understood. The pivot pin 9 ispassed through the ears 8 and the upper and lower portions 1 of thestationary arm or handle 1, at a suitable point along the inner edge ofsaid stationary arm or handle 1 a short distance from the forward'end ofthe same, as will be readily understood by referring to the drawing. Itwill also be seen that by connecting the adjustable and stationary armsin this manner, said adjustable arm may be swung to position against theinner face of the stationary arm or handle 1 and parallel with thelatter when the device is not in use. Further, the adjustable arm may beswung at any desired angle with respect to the stationary arm or handle1 and the angle indicated by the position of the inner forward corner ofthe stationary arm or handle 1 upon the scale 10 upon the upper face ofsaid first or inner section 4: of the adjustable arm.

Each of the sections 5 and 6 of the adjustrected tongue l3'formed on thelower edgeof the inclined front portion of said section, for the purposeof forcing the slidable sections outwardly for a short distance in orderthat they maybe grasped and pulled up wardly until the stop lugs llreach the outer ends of the slots 12 withinwhich they are n e It w l bunder t od th th tongues 13. are preferably located near the inner endsof the slidable sections and. are

arranged in such mannerthat when the d e vice is in closed position; asshown in F ig. 2, said tongues l3 will be spaced from one an} other inorder that they be readily. en? gaged separately, whereby either of thesec? tions 5 and'6 maybe readily forced out wardly and it will 'beundersto od that while the sections 4,5, and 6 may be of any siredlength, I prefer to. have. each section 4 preferably substantially six'inches in length and have the-length ofthe slots 12 so that when thesections 5 and 6 are in their eX-v tended positions, each of saidsections 5 and 6 extends into the section within which it slidesfor thedistance of substantially one inch, the graduation marks on sa idsections 5 and -6' bein g regulated accordingly to form thecomplete'rule when'the sections cfthe adjustable arm are extended totheir outermost positions.

The adjustable arm may be readily regulated in adjusted position withrespect tothe stationary arm or handle 1 by any suitable ilock nut 14:threaded uponone end of t he pivot pin 9. If'desired, a spirit level 15maybe positioned in the-stationary arm or-handle'l-as will be clearlyunderstood; \Vhile I have shown the preferred embodiment of myinvention, it will be understood that minor changes in the detailsofconstruction and arrangement of-par-ts may be made with-in the scopeof the appended claims without departing from thespiritof my inventionor sacrificingany of the ad vantages of the same.

What I claim is 1. A device of the character described comprising aplurality of telescoping sec- ;tions, each of said sections beingsubstantially U-shape in cross section, the free longitudinalmarginalportions of the-lower walls of said sections being in alinem ent.

2. A. device ofthe character described comprising a plurality oftelescoping sec tions each of said sections being substan tiallyU-sha'pe in cross section, the free longitudinal marginal portions ofthe lower walls of said sections being in alincment, the freelongitudinal marginal portions of the upper walls of the section beinginclined downwardly and forwardly and terminating a predetermineddistance inwardly of the lon al ed es o the. 5%? f l at th sections.

3. A device of the character described comprising a plurality oftelescoping sections; each of said sections being substam tially U-shapein cross section, the free longitudinal marginal portions of the lowerwalls of said sections being in alinement, the free longitudinalmarginal portions ofthe upper walls of the sectio ns'being inclineddownwardly and forwardly and terminating a predetermined distanceinwardly of the longitudinal edges of the lower walls of the sections,and means carried by the inclined portions of certainof the-sectionsadjacent their outer extremities whereby relative movement, may beimpart-ed to the sections.

4. A "device of the character described comprising a plurality oftelescoping sections, each of said sectionsbeing substan-. tially'll-shap in 'cross section, the-free lengitu'dinal marginal portions ofthe lower" v ELMEB .Qe FARR: Witnesses:

Games of thiapatent may be obtained Zorflvc cents each. by addressingthe? Commissioner ofi Batent s, Washington, D; C."

